Hugo iiaeetee



(No Model.)

H; HAERTER.

SPRING BALANCE. No. 345,049. Patented July 6, 1886.

ATTORNEYS.

Lil

HUGO IIAERTER, OF NEXV YORK, N.

SPRiNG-BALANCE.

Application tiled Oct ber l2, IEFS.

To (all 711/1072 it lit/Ly concern:

Be it known that l, HUoo Hana/run, ot' the city, county, and State otNewYork, have in vented a new and useful Improvement in Spring- Kalauces,of which the following is a full, clear, and exactdescription.

tet'erence is to be had to the accompanying drawings, forming apart ofthis specification, in which similar letters of rel'erence indicatecorresponding parts in all the figures.

Figure l is a trout elevation ot'aspring-balance to which my improvementhas been ap plied, parts being broken away. Fig. 2 is a side elevationof the same. Fig. 3 is a sectional plan view of a part of the same takenthrough the broken line 0c at, Fig. 1. Fig. dis a sectional sideelevation of a part of the same, taken through the broken line 9 1 Fig.1.

The object oi this invention is to provide spring-balances constructedin such a manner that the pointer can be readily brought tothezero-point should the scale-pan be removed or changed for a heavier or alighter one, or should a plate or other vessel be placed on the pan toreceive the substance to be weighed.

The invention consists in the combination ofthe adjusting mechanism withthe parts of an ordinary springbalance, as will he hereinafter fullydescribed, and then claimed.

A represents the case or box that incloses the mechanism, and to whichis secured the dial 1;, and the frame 0, that carries the glass platecovering the said dial B. Upon the upper end of the case A is t'ormed alug, to which is secured a ring, D, for convenience in holding orsuspending the spring-balance while being used. At the lower end of thecase A is a hook, E, from which is suspended the scalepau, or thearticle to be weighed,and which is secured to the lower end ota bar, F,passing through an aperture in the lower end of the said case A.

To the upper end of the bar F is hinged the lower end of the rack-bar G,the teeth of which engage with the teeth of the small pinionwheel H,journaled to the case A. To the forward journal of the piuion-wheel H isattached the pointer I. The rack-bar G is kept in gear with thepinion-wheel H by a guard, J, attached to or formed upon the case A.

AGATTQIG' forming part of Letters Patent No. 345,049, dated July 6,1886.

Serial No. 179,653. (X0 model.)

To the upper end of the bar F is also hinged the center of the cross barK, to the ends of which are attached the lower ends of the springs L.

The springs L are graduated, so that their length will increaseregularly as the weight suspended from them is increased, and in thesame ratio.

The upper ends of the graduated springs L are attached to eye screws M,which are screwed into the ends of a cross-bar, N; or the said springscan be attached directly to the said cross-bar. Upon the lower side ofthe crossbar N is formed, or to it is rigidly attached, a projection orblock, 0, having an inclined lower side, which rests upon the inclinedupper side ol' the block P. Thelowersideot' the inclined block P ishorizontal, and rests and slides upon supports Q, rigidly secured to thecase A.

In the end of the sliding block 1 is formed a screw-hole to receive thescrew R, which passes through and is swiveled to the side of the case A,and has a button formed upon or attached to its outer end, so that itcan be readily operated to give a horizontal movement to the inclinedsliding block 1.

The block 0 and crossbar N are held from having a longitudinalmovemeuhand are made to move up and down vertically by guide-rods S,attached to the top of the case A and to the supports Q, and which enterrecesses in the side of the cross-bar N.

With this construction, when the scale-pan is removed or changed, or avessel is placed upon the sealepau, thepointer can be brought to thezeropoint by operating the screw It, which moves the inclined block Phorizon tally and the block 0 and cross-bar N vertically raising orlowering the springs L, cross bar K, and rack-bar G, and turning the pinion H and pointer I until the said pointer is brought to the zero-pointand the spring balance is ready to receive the substance to be weighed.

Having thus described my invention, I claim as new and desire to secureby Letters Patent In a spring-balance, the combination, with the case A,the graduated springs L, the crossbar K, attached to the said springs,and carry- I wheel H, engaging with the saidrack-bar,and

ing the suspending-bar F, the rack-bar G, con- 1 S, for keeping the saidinclined blocks in nected with the said cross -bar. the pinionplace,substantially as herein shown and de- [0 scribed, whereby the saidpointer can be readily brought to the zero-mark, as set forth.

HUGO HAERTER.

the pointer I, of the Vertically-moving cross- 5 bar N, the inclinedblock 0, attached thereto,

the horizontally-moving inclined block I, the swiveled screw 1%, foradjusting the said inclined blocks, and the supports Q and guardsWitnesses:

J AMES T. GRAHAM, .SEDGWICK.

